Alarm clock



FIG. 1 is a perspective partially opened view of the alarm clock.

FIG. 2 is a completely opened front view thereof.

FIG. 3 is a completely opened rear view thereof.

FIG. 4 is a closed perspective view thereof.

FIG. 5 is a right side view thereof; and,

FIG. 6 is a left side view thereof. 

The ornamental design for a alarm clock, as shown and described. 